error C4996 scanf This function or variable may be unsafe in c programming

Question

I have created a small application to find max number by using user-defined function with parameter   When I run it  it shows this message       Error 1   error C4996   scanf   This function or variable may be unsafe    Consider using scanf s instead  To disable deprecation  use    CRT SECURE NO WARNINGS  See online help for details    What do I do to resolve this    This is my code    include lt stdio h gt   void findtwonumber void   void findthreenumber void    int main         int n      printf  Fine Maximum of two number n        printf  Fine Maximum of three number n         printf  Choose one         scanf   d    amp n       if  n    1                findtwonumber              else if  n    2                findthreenumber              return 0     void findtwonumber void        int a  b  max      printf  Enter a         scanf   d    amp a       printf  Enter b         scanf   d    amp b       if  a gt b          max   a      else         max   b      printf  The max is  d   max      void findthreenumber void        int a  b  c  max      printf  Enter a         scanf   d    amp a       printf  Enter b         scanf   d    amp b       printf  Enter c         scanf   d    amp c       if  a gt b          max   a      else if  b gt c          max   b      else if  c gt a          max   c      printf  The max is  d   max

User · Answer

You can add   CRT SECURE NO WARNINGS  in Preprocessor Definitions   Right-click your project- Properties- Configuration Properties- C C   - Preprocessor- Preprocessor Definitions

User · Answer

Another way to suppress the error   Add this line at the top in C C   file    define  CRT SECURE NO WARNINGS

User · Answer

It sounds like it s just a compiler warning    Usage of scanf s prevents possible buffer overflow  See   http   code wikia com wiki Scanf s  Good explanation as to why scanf can be dangerous  Disadvantages of scanf  So as suggested  you can try replacing scanf with scanf s or disable the compiler warning

[c] error C4996: 'scanf': This function or variable may be unsafe in c programming

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